Sole-sewing machine.



s. A 110131115. SOLE SEWING MACHINE.

APPLICATION FILED MAR. 12. H3.

Patented Oct. 10,1916.

5 SHEETS-SHEET 1.

S. A. DOBYNE.

SOLE SEWING MACHINE. APPLICATION FILED MAR-12. 1913.

1,201,160. Patented 001. 10,1916.

5 SHEETS-SHEET 2- s. A. DOBYNE. SOLE SEWING MACHINE. APPLICATION FILED AR. 12. 1913.

fizzedz S. A. DOBYNE.

SOLE SEWING MACHINE.

APPLICATION FILED MAR. 12. 1913.

Patented Oct. 10,1916.

5 SHEETS-SHEET 4 s. A. DOBY NEI SOLE SEWING MACHINE.

APPLICATION FILED MAR. 12. 1913- Patented Oct. 10,1916.

5 SHEETS-SHEET 5.

STEPHEN A. DOBYNE, GF ST. LOUIS, MISSOURI, ASSIGNOR TO CHAMPION SHOE MACHINERY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MIS- SOURI.

SOLE-SEWING MACHINE.

Specification of Letters Patent. Patented 1;. 19 1916 Application filed March 12, 1913. Serial No. 753,751.

To all whom it may concern Be it known that I, STEPHEN A. DOBYNE, a citizen of the United States, and residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Sole-Sewing Machines, of which the following is a specification.

This invention relates to sewing machines and more particularly to sole sewing machines of the type shown and described in Patent No. 473,870.

One of the objects of this invention is to construct a machine in which the parts are so arranged that the work may be readily removed from the machine at the completion of sewing a shoe, .and to provide means whereby the machine may be readily stopped in that position.

Another object is to construct novel thread controlling mechanism, and provide novel thread measuring means, by means of which each stitch will be set accurately and uniformly. Y

Further objects will appear from the detail description taken in connection with the accompanying drawings, in which:

Figure 1 is a front elevationof a sole sewing machine embodying this invention, Fig. 2 is a plan view, the cams and shaft being shown dotted, Fig. 3 is a side elevation from the leftside of the machine, Fig. 4 is a side elevation from the right side of the machine, Fig. 5 is a detail side elevation of the thread measuring mechanism, Fig. 6 is a detail section on the line 66 Fig. 5, Fig. 7 is a section on the line 7-7 Fig. 5, Fig. 8 is a detail side elevation of the threadlock or clamp,

'Fig. 9 is a section on the line 99 Fig. 8,

- elevation. I

Referring to the accompanying drawings designates a column upon which is mounted a head or base 16 having brackets 17 and 18 for supporting a driving shaft 19. A series of cam wheels 20, 21, 22 and 23 are keyed to the driving shaft and are provided with cam grooves for operating the various parts of the machine, The cam wheel 20 has a cam groove which operates the feed slide 24,

and another cam groove which operates the thread lifter 25. The cam wheel 21 is provided with cam grooves for operating th 7 end of. the shaft.

presser foot 26, the looper 27 and the awl 28. The cam wheel 22 is provided with cam grooves for operating the needle 29, the looper 27, the shuttle and the thread finger 31. The cam wheel 23 is provided With cam grooves for operating the thread clamp, the needle guide and the thread measurer. The construction, except as hereinafter described, is substantially the same as in said patent, and as in application Serial No. 631,290, filed June 5, 1911.

. The presser-foot 26 co6perates with av work support of usual construction and is provided with a handle 36 whereby it may be raised and lowered by, hand, and with a latch 37 engagmg a keeper 3 8. The presserfoot operating cam groove 1n thecam wheel 21 has two cam portions, one of which unlocks the presser-foot during-the feeding of the work and the otherof which short cam portion) unlocks the presser-foot when the awl and needle are out of the work and When'the thread lock or clamp is open. The arm 39 on the presser-foot has pivotally mounted thereon an arm or link 40 provided with a block 41 which is adapted to be engaged by a beveled lug 42 on the cam roll 21 to raise the Presser-foot while thethreadlock is open and while the awl and needle are out of the work. The construction and operation of this presser-foot mechanism is fully shown and described in application Serial No. 735,213, filed December 6, 1912.

The cam wheel 20 has a cam groove engaged by a cam roll 46 on one arm 47 of a lever pivoted at 48' on the bracket 17. The other arm 49 of this lever is connected by a link 50 to an arm 51 on one end of a shaft 52 mounted for rotativemovement in a bore in the head 16 and in a bracket'53 on the head. A take-up lever54 is mounted on the other A thread'tension comprises a pair of thread engaging disks 55 mounted on a shaft supported on the machine head and held in clamping engagement bya spring 56 on the shaft, the tension of this spring being adjusted by nuts 57. An auxiliary take-up 58 of usual construction is mounted on the machine head.

. A shaft 60 extends through the machine head and this shaft has loosely mounted thereon a hollow shaft or sleeve 61 having a bearing in abracket ,62 on the machine head. An arm 63 is mounted or formed on the shaft 61 and carries a roll 54 for the thread. The other end of the sleeve has clamped thereon an arm which has pivoted thereon a block 66 on which is movable a slide 67. This slide is pivoted at 68 to a lever 69, pivoted at one end on the bracket 18 and pivotally connected at its other end with a link 70. This link 70 is pivotally connected with an arm 71 rigidly connected to one end of the shaft 60. The other end of the shaft 60 which extends through the machine head has an arm 72 connected by a link 7 3 with the arm 39 on the presser-foot. The pivotal connection between the link 70 and the arm 71 is formed by a pin 74 in the link 70 having an eccentric 7 5 extending through the link 71. The pin "(4 is provided with a slotted head so that it may be adjusted and thispin is locked in adjusted position by a clamping screw 7 6 adapted to contract the split end of the link 70, and by a lock nut 7 7 on the pins 74. A lever 7 8 is pivoted intermediate its ends on the bracket 18 and one end of this lever has a cam roll 79 engaging a cam 80 in the cam wheel 23, while the other end of the lever 78 is connected by a link 81 withthe, upper end of the slide 67.

The cam groove 80 will oscillate the lever 7 8,iand this lever will in turn move and oscillate the slide 67 on its pivot 68. The oscillation ofthe slide 67 will in turn oscillate the arm 65 which will in turn move the thread arm 63 up and down. If the lever 69 be lowered the action of the slide 67 on the arm 65 will be increased so that the stroke of the lever 63 will be increased. On the other hand if the slide 67 be raised by raising the lever 69 the stroke of the lever 63 will be decreased. The interconnection of the lever 69 with the presser-foot is such that as the presser-foot is raised forthicker material the lever 69 is lowered so as-to inconnection between the link crease the stroke of the thread arm 63, and as the presser-foot approaches the work support the stroke of the thread arm will decrease. The stroke of the thread arm therefore varies automaticallv with the thickness of .the work. The stroke of the thread arm 63, maybe independently and manually adjusted bymeans of the adjustable eccentric 70 and the arm 71.

"The sleeve 61 has mounted thereon betweenthe bearing 62 and the arm 63 a sleeve 85 which has an arm 86 adapted to-cooperate with a grooved sheave 87 on the machine head. Another arm 88 on the lever has a cam roll 89 working-in the cam groove 90 on the cam wheel 23. The cam roll 89 is mounted uponthe eccentric part 91 of a pin 92 mounted in the arm 88 and having a knurled head 93 wherebyit may be adj usted.

The end of-the'leveris split so that it may be contractedby a clamping screw 94 to hold the pin 92 in adjusted position. By means e1 this aonstruqt eethe cam q l flim yzb adjusted with respect to the lever 88 to ac curately adjust the engagement between the arm 86 and the sheave S7.

The path of the thread is shown in Fig. 3. The thread passes from a wax pot (not shown) between the sheaves 55, over the sheave 6% on the thread measuring arm 63, under the sheave 87 of the thread clamp, over the auxiliary take-up 58, and over the take-up 54 to the stitch forming mechanism. The timed relation of the stitch forming mechanism and of the thread controlling mechanism is the same as in the patent heretofore referred to. The thread measuring arm moves down to measure the thread while the thread is clamped between the sheave S7 and the arm 86 and while thetake-up moves down to take up and set the stitch The thread so measured is thereafter given up to the auxiliary take-up. The thread measuring arm will automatically measure the thread in accordance with the thickness of the work through the connection of the thread measurer operating means with the presser-footas heretofore described, and this connection can be independently adjusted by means of the eccentric connection between the presser-foot and the thread measurer operating means.

A bell crank lever 95 is mounted on a shaftjournaled in the bracket 18 and this lever has one arm provided with a cam roll 96 coiiperating with the cam groove 97 in the cam roll 23. The other arm of the bell crank lever has a tooth 98 meshing with teeth 99 on a lever 100 pivoted intermediate its ends on the machine head, and having at its other end teeth 101 meshing with a seg ment 102 on the needle guide. The teeth 98 and 99 are shaped to form the teeth of a bevel gear. By means of this construction the needle guide is operated positively in both directions.

The timed relation of the mechanisms in this machine is substantially the same as that in the machine of the patent. A cycle of operations is as follows: The presserfoot being locked to clamp the stock, the awl rises to pierce the work. the presser-foot is released, the awl feeds the work, the awl is retracted, the needle pierces the work, the presser-foot is locked, the needle is retracted, the take-up rises to give up the thread the shuttle takes the loop, the thread clamp opens, the thread measurer movesdown to give up the thread to the auxiliary tension, (the thread clamp being open at this time, while the presser-foot is also unlocked for ashort period), the take-up moves down to take up and set the stitch, while the thread clamp clamps the thread, and the thread measurer rises to measure or draw the thread from the supply.

Tn order to removethe Work from the ma- Ph e t -mtd i't i te rs 7 99-. i1

erator backs up the machine to cause the lug 42 to engage the block 41 and raise the presserfoot. The engagement between the lug and block takes place while the short portion of the Presser-foot cam unlocks the presser-foot and while the awl, needle and thread clamp cams are in position so that when the presser-foot is raised the awl and needle will be out of the work while the thread clamp will be open to release the thread. The work can therefore be removed at this point. It will be noted that the raising of the presser-foot and the positioning of the other parts is performed upon a mere reversal of the machine. The presser-foot raising mechanism furnishes a convenient means for placing the parts in proper position and for determining when the parts are in proper position to permit removal of the work.

It is obvious that various changes may be made in the details of construction without departing from the spirit of this invention, and it is therefore to be understood that this invention isnot to be limited to the specific construction shown and described.

Having thus described the invention What is claimed is:

1. In a sewing machine, thread controlling mechanism comprising a support, an oscillating shaft mounted in saidsupport, a thread measuring arm secured to said shaft to oscillate therewith, a thread clamping arm loosely mounted on said shaft to oscillate thereon, and means for operating said shaft and said thread clamping arm, said measuring and clamping arms being arranged 011 one side of said support.

2. In a sewing machine, thread controlling mechanism comprising a support, a shaft mounted to oscillate in said support, a thread clamping arm mounted to oscillate on said shaft, a thread measuring arm secured to one end of said shaft to oscillate therewith, an operating arm secured to the other end of said shaft, and means for operating said thread clamping arm and said operating arm, said measuring and clamping arms being arranged on one side of said support.

3. In a sewing machine, thread controlling mechanism comprising a shaft, a sleeve mounted on said shaft, a thread measuring arm mounted on said sleeve to move therewith, a thread clamping arm mounted to oscillate on said sleeve, and means for operating said thread clamping arm and said sleeve.

4:. In a sewing machine, thread controlling mechanism comprising a shaft, a'sleeve mounted on said shaft, a thread measuring arm mounted on said sleeve to move therewith, a thread clamping arm mounted to oscillate on said sleeve, means for operating said thread clamping arm and said sleeve,

and adjusting means for said thread measuring arm.

5. In a sewing machine, thread controlling mechanism comprising a shaft, a sleeve mounted on said shaft, a thread measuring arm mounted on one end of said sleeve, an operating arm mounmd on the other end of said sleeve, a thread clamping arm mounted to oscillate on said sleeve, an actuating connection to said operating arm, and means connected to said shaft for adjusting said actuating connection.

6. In a sewing machine, thread controlling mechanism comprising a thread measuring arm, an operating arm connected thereto, a slide having a sliding connection with said operating arm, a lever for pivotally supporting said slide to oscillate on said lever, means for oscillating said slide on said lever, and means concentric with one of saidarms for adjusting said lever.

7. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on said shaft, adjustable means for operating said arm, a presser-foot connected to oscillate said shaft, and an adjusting connection from said shaft to said operating means,

8. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on said shaft, an operating arm connected with said thread measuring arm, an adjustable actuator for said operating arm,

and an adjusting connection between said shaft and said actuator.

9. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on said shaft, an operating arm connected with said thread measuring arm, an actuator having a sliding connection with said operating arm, and means on said shaft for sliding said actuator;

10. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on said shaft, an operating arm connected with said thread measuring arm, an actuator slide engaging said operating arm, and an arm on said shaft connected to adjust said actuator slide.

11. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on said shaft, an operating arm connected withsaid thread measuring arm, an actuatorslide engaging said operating arm, a movable support for said slide, means for oscillating said slide, and an arm on said shaft connected to said movable support.

12. In a sewing machine, thread controlling mechanism comprising a shaft, a thread measuring arm mounted to oscillate on saidshaft, an operating arm connected with said thread measuring arm, an actuator slide engaging said operating arm, a lever for pivotally supporting said slide, means for oscillating said slide, an arm on said shaft connected to said lever, and a presser-foot connected with said shaft.

13. In a sewing machine, thread controlling mechanism comprising a shaft, a

thread measuring arm mounted to oscillate said shaft to oscillate therewith, a thread clamping arm loosely mounted onsaid shaft to oscillate thereon, a controlling shaft Within said first shaft, and an operating connection to said tlireadmeasuring arm con trolled from said controlling. shaft.

15.111 a sewing machine,-'thread controlling mechanism comprising an oscillating shaft, a thread measuring arm secured to said shaft to oscillate therewith, a thread to oscillate thereon, means for operating said thread measuring and clamping arms, a con trolling shaft. Within said first shaft, a presser-foot connected to operate said controlling shaft, and means operated on said con trolling shaft for controlling said measuring arm.

17. In a sewing machine, thread controlling mechanism comprising a thread clamp, a cam, an arm connected to said thread clamp, a cam roll, and a pinfor said cam roll having an eccentric hearing in said arm.

In testimony whereof I aflix my signature in the presence of two Witnesses.

STEPHEN A. DOBYNE.

Witnesses Es'rmm FREIMUTH, C. A. ALDRICH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). C. 

